In a nursery, how many tones of blue are there? An exploration around infants, books, Pigments and cirandas. Olhar de Professor, [S. l.], v. 22, p. 1–14, 2019. DOI: 10.5212/OlharProfr.v.22.0002. Disponível em: https://revistas.uepg.br/index.php/olhardeprofessor/article/view/13765. Acesso em: 30 may. 2026.